KR20090074979A - Transparent resin composition and preparation method thereof - Google Patents

Abstract

The present invention relates to a transparent resin composition and a method for producing the same, and more specifically, (a) 1 to 10% by weight of a methyl methacrylate is formed by polymerization; (b) 10 to 50% by weight of an acrylic rubber core surrounding the seed and formed by polymerization of an alkyl acrylate and an aromatic vinyl compound; And (c) 40 to 80% by weight of a shell surrounding the core and formed by polymerizing at least one compound selected from the group consisting of methyl methacrylate and alkyl acrylate and aromatic vinyl compound, wherein (a) The refractive index of the seed, (b) core and (c) shell is 1.48 to 1.50, respectively.

According to the present invention, it is excellent in workability and weather resistance even when processed alone without kneading with polymethyl methacrylate resin, and the refractive index between the layers is constantly adjusted to provide a transparent resin composition with improved impact strength without lowering transparency. .

Description

Transparent resin composition and its manufacturing method {TRANSPARENT RESIN COMPOSITION AND METHOD OF PREPARING THE SAME}

The present invention relates to a transparent resin composition and a method for manufacturing the same, and excellent in processability and weather resistance even when processed alone without kneading with a polymethyl methacrylate resin, and the refractive index between each layer is controlled to be constant without impacting transparency The present invention relates to a transparent resin composition having improved strength and a method of manufacturing the same.

Korean Unexamined Patent Publication No. 2002-0003484 (published Jan. 12, 2002) discloses a thermoplastic transparent resin and bulk polymerization of a grafted methacrylic acid alkyl ester derivative or an acrylic acid alkyl ester derivative, an aromatic vinyl compound and a vinyl cyan compound on polybutadiene rubber. The composition which knead | mixed the produced methyl methacrylate- styrene- acrylonitrile (MSAN) resin is disclosed. The resin composition is excellent in impact resistance, processability and surface gloss, but due to the properties of the polybutadiene rubber, weather resistance, light resistance, etc. are not good, and its use is limited.

Accordingly, a method of applying a polymethyl methacrylate resin (PMMA) resin having excellent weather resistance has been proposed to reinforce the weatherability problem.

Korean Laid-Open Patent Publication No. 2004-0019204 (published on March 5, 2004) discloses a triple multilayer sheet co-extruded with PMMA resin, acrylonitrile-butadiene-styrene (ABS) resin and PMMA resin having excellent impact resistance. However, the triple multilayer sheet has a problem in that it is impossible to maintain transparency when it is used after regeneration.

Polymethyl methacrylate (PMMA) resin is not only excellent in transparency and weather resistance but also excellent in hardness, chemical resistance, surface gloss, adhesiveness, etc., and thus is widely used as a substitute for glass. However, PMMA resins have a lower impact resistance than other plastic materials to increase the thickness of the product or are used only for limited applications.

In order to improve the impact resistance of such a PMMA resin, a method of modifying using an impact modifier has been proposed.

Japanese Laid-Open Patent Publication No. 2006-131803 (published May 25, 2006) discloses a modified PMMA resin using an impact modifier using an acrylic rubber. Although the impact resistance of the PMMA resin was improved by the above method, it was not satisfactory, and when a large amount of impact modifiers were used to improve the impact resistance, the hardness and transparency of the PMMA resin were lowered.

U.S. Patent No. 4,999,402 (1991.03.12) discloses a method of improving the processability by adding a molecular weight modifier to the shell layer in preparing a transparent resin consisting of a polymethyl methacrylate shell layer on an acrylic rubber core. The transparent resin prepared by the above method can be processed alone, but due to its structural problems, satisfactory impact strength has not been obtained, and transparency is reduced because the refractive index of the layers is not controlled, and the use thereof has a film level. There is a problem that is limited only to thickness.

In order to solve the problems of the prior art as described above, an object of the present invention is to provide a transparent resin composition which is excellent in workability and weather resistance, and the refractive index between each layer is constantly adjusted to be excellent in transparency and impact strength.

Moreover, it aims at providing the manufacturing method of the said transparent resin composition.

The above and other objects of the present invention can be achieved by the present invention described below.

In order to achieve the above object, the present invention

(a) 1 to 10% by weight of seeds formed by polymerization of methyl methacrylate;

(b) 10 to 50% by weight of an acrylic rubber core surrounding the seed and formed by polymerization of an alkyl acrylate and an aromatic vinyl compound; And

(c) 40 to 80% by weight of a shell surrounding the core and formed by polymerization of at least one compound selected from the group consisting of methyl methacrylate and an alkyl acrylate and an aromatic vinyl compound;

It provides a transparent resin composition characterized in that the refractive index of the (a) seed, (b) core and (c) shell is 1.48 to 1.50, respectively.

Also,

(A) polymerizing methyl methacrylate to produce a seed;

(B) polymerizing a mixture of alkyl acrylate and aromatic vinyl compound in the presence of the prepared seed to produce an acrylic rubber core; And

(C) preparing a shell by polymerizing a mixture comprising methyl methacrylate and at least one compound selected from the group consisting of alkyl acrylates and aromatic vinyl compounds in the presence of the prepared core. It provides a method of manufacturing.

According to the present invention, it is excellent in workability and weather resistance, and the refractive index between the layers is constantly adjusted, thereby obtaining an effect of obtaining a transparent resin composition excellent in transparency and impact strength.

Hereinafter, the present invention will be described in detail.

The transparent resin composition of the present invention (a) 1 to 10% by weight of methyl methacrylate is formed by polymerization; (b) 10 to 50% by weight of an acrylic rubber core surrounding the seed and formed by polymerization of an alkyl acrylate and an aromatic vinyl compound; And (c) 40 to 80% by weight of a shell surrounding the core and formed by polymerizing at least one compound selected from the group consisting of methyl methacrylate and alkyl acrylate and aromatic vinyl compound.

The (a) seed according to the present invention may be prepared by emulsion polymerization of methyl methacrylate, wherein an emulsifier, an initiator, a crosslinking agent, and ion-exchange water, etc. which are commonly used in emulsion polymerization may be used.

It is preferable that the seed has an average particle diameter of 50 to 200 nm. When the average particle diameter is 50 to 200 nm, there is an effect of preventing the deformation of the rubber phase during processing.

In addition, the seed preferably has a refractive index of 1.48 to 1.50 in order to maintain transparency.

The seed is preferably contained in 1 to 10% by weight relative to 100% by weight of the total monomer constituting the transparent resin composition of the present invention. If the content is less than 1% by weight, the rubber phase is easily deformed during processing, and if the content is more than 10% by weight, the impact strength is lowered.

The acrylic rubber core (b) according to the present invention surrounds the seed (a) and is formed by polymerization of an alkyl acrylate and an aromatic vinyl compound. That is, the core is formed by polymerizing 8 to 40% by weight of alkyl acrylate and 2 to 10% by weight of aromatic vinyl compound with respect to 100% by weight of the total monomer constituting the transparent resin composition.

The alkyl acrylate is an alkyl acrylate having 1 to 8 carbon atoms, specifically methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl acrylate, hexyl acrylate, octyl acrylate, and 2- One or more selected from the group consisting of ethylhexyl acrylate can be used.

As the aromatic vinyl compound, at least one selected from the group consisting of styrene, α-methylstyrene, p-methylstyrene, and vinyltoluene may be used.

The core according to the present invention can be prepared by emulsion polymerization of an alkyl acrylate and an aromatic vinyl compound in the presence of the seed.

The core preferably has an average particle diameter of 100 to 400 nm. If the average particle diameter is less than 100 nm, the impact strength is lowered, and if it exceeds 400 nm, there is a problem that deformation is likely to occur during processing.

The core is preferably contained in 10 to 50% by weight relative to 100% by weight of the total monomer constituting the transparent resin composition of the present invention. If the content is less than 10% by weight, the impact strength is greatly reduced, if the content exceeds 50% by weight there is a problem that the hardness is lowered.

In addition, the core has a refractive index of 1.48 to 1.50 in order to maintain transparency, and preferably the same as the refractive index of the seed.

The shell (c) according to the present invention surrounds the core and is formed by polymerizing at least one compound selected from the group consisting of methyl methacrylate, alkyl acrylate and aromatic vinyl compound. That is, the shell is 39 to 70% by weight of methyl methacrylate relative to 100% by weight of the total monomer constituting the transparent resin composition, and 1 to 10% by weight of at least one compound selected from the group consisting of alkyl acrylates and aromatic vinyl compounds It is formed by polymerization.

As the alkyl acrylate and the aromatic vinyl compound, the same components as the alkyl acrylate and the aromatic vinyl compound used in the preparation of the core (a) may be used.

The shell according to the present invention may be polymerized further including a crosslinking agent to make the impact strength and workability more constant. The crosslinking agent is 3-butanediol diacrylate, 1,3-butanediol dimethacrylate, 1,4-butanediol diacrylate, 1,4-butanediol dimethacrylate, allyl acrylate, allyl methacrylate, trimethylol One or more types selected from the group consisting of propane triacrylate, tetraethylene glycol diacrylate, tetraethylene glycol dimethacrylate, and divinylbenzene can be used.

The crosslinking agent is contained in an amount of 0.01 to 0.2% by weight based on 100% by weight of the total monomer constituting the transparent resin composition and polymerized.

The shell may be prepared by emulsion polymerization of at least one compound selected from the group consisting of methyl methacrylate and alkyl acrylate and aromatic vinyl compound in the presence of the core.

It is preferable that the said shell has an average particle diameter of 200-1000 nm. When the average particle diameter is 200 to 1000 nm, there is an effect excellent in workability.

The shell is preferably included in 40 to 80% by weight relative to 100% by weight of the total monomer constituting the transparent resin composition of the present invention. If the content is less than 40% by weight, the workability is lowered, and if the content exceeds 80% by weight, there is a problem that the impact strength is lowered.

In addition, the shell has a refractive index of 1.48 to 1,50 in order to maintain transparency, preferably the same as the refractive index of the seed, the core.

The transparent resin composition of this invention which consists of a seed, an acrylic rubber core, and a shell as mentioned above is excellent in weatherability by including an acrylic rubber core. In addition, the refractive index between each layer of the seed, the core and the shell is constantly adjusted to allow single processing, thereby improving the impact strength without decreasing transparency.

Transparent resin composition of the present invention, A) polymerizing methyl methacrylate to prepare a seed; (B) polymerizing a mixture of alkyl acrylate and aromatic vinyl compound in the presence of the prepared seed to produce an acrylic rubber core; And (C) polymerizing a mixture comprising methyl methacrylate and at least one compound selected from the group consisting of alkyl acrylates and aromatic vinyl compounds in the presence of the prepared cores to prepare a shell. have.

In addition, the transparent resin composition of this invention can be manufactured by further adding a crosslinking agent at the time of manufacture of said (C) shell.

In addition, at the time of manufacture of the said shell, it can superpose | polymerize by adding a molecular weight modifier. The molecular weight modifier may be used one or more selected from the group consisting of t-dodecyl mercaptan (tertiary-dodecyl mercaptane) and n-octyl mercaptane (n-octyl mercaptane).

It will be apparent to those skilled in the art that the transparent resin composition of the present invention may further include dyes, pigments, lubricants, antioxidants, ultraviolet stabilizers, thermal stabilizers, reinforcing agents, fillers and light stabilizers which are commonly used according to the use.

Hereinafter, preferred examples are provided to help understanding of the present invention, but the following examples are merely to illustrate the present invention, and the scope of the present invention is not limited to the following examples.

EXAMPLE

Example  One

(a) Preparation of Seed

1052.7 g of ion-exchanged water was introduced into the reactor and the temperature was raised to 70 ° C with nitrogen washing. When the temperature of the ion-exchanged water reached 70 ° C, 20 g of sodium dodecyl sulfate (SLS, 3 wt% solution), 148.5 g of methyl methacrylate (MMA), and 1.5 g of allyl methacrylate (AMA) were temporarily Input. When the temperature in the reactor was stabilized at 70 ° C., 70 g of potassium persulfate (KPS, 3 wt% solution) was added to initiate the polymerization. Nitrogen washing was performed continuously until the reaction was complete. At this time, the seed was a ratio of 5% by weight relative to 100% by weight of the total monomer constituting the transparent resin composition of the present invention.

The average particle diameter of the polymerized seed latex was measured using NICOMP, a laser light scattering device, and found to be 101.7 nm and a refractive index of 1.4903.

 (b) Preparation of Acrylic Rubber Core

First, 406.4 g of ion-exchanged water, 130 g of sodium dodecyl sulfate (3 wt% solution), butyl acrylate 722.3 g, styrene 171 g, allyl methacrylate 4.5 g, and divinylbenzene 2.4 g were stirred to emulsify the monomer. . The emulsified monomer was added dropwise to the reactor in which the seed polymerization was completed at a temperature of 70 ° C. and a nitrogen atmosphere for 2 hours, and at the same time, 163.5 g of potassium persulfate (KPS, 3 wt% solution) was added to proceed with the reaction. 20 g of potassium persulfate (KPS, 3% by weight solution) was added thereto to undergo a aging step for 1 hour after the reaction was terminated. At this time, the acrylic rubber core was a ratio of 30% by weight to 100% by weight of the total monomer constituting the transparent resin composition of the present invention.

The conversion rate of the polymerized core latex was 99%, the average particle diameter was 172.0 nm, and the refractive index was 1.4903.

(c) shell manufacturing

After the completion of the core polymerization, 886 g of ion-exchanged water, 290 g of sodium dodecyl sulfate (3% by weight solution), 1800.0 g of methyl methacrylate, 150.0 g of methyl acrylate, and 6.0 g of n-octyl mercaptan were added dropwise for 2 hours. Input. When the temperature in the reactor was stabilized at 70 ° C., 100 g of potassium persulfate (KPS, 3 wt% solution) was added to initiate the polymerization. After completion of the reaction, 30 g of potassium persulfate (KPS, 3 wt% solution) was further added to undergo a aging step for 1 hour, and nitrogen washing was continuously performed until the reaction was completed. At this time, the shell was 65% by weight relative to 100% by weight of the total monomer constituting the transparent resin composition of the present invention.

The conversion rate of the final polymerized transparent resin latex was 99%, the average particle diameter was 268.5 nm, and the refractive index was 1.4903.

Ion-exchanged water was added to the final transparent resin latex prepared as described above to lower the final solid content to 10% by weight or less, and the temperature was raised to 80 ° C while slowly stirring with a stirrer. 22 wt% aqueous calcium chloride solution was added thereto to prepare a mixture in the form of a slurry. The mixture was cooled to 90 ° C. or more, and then cooled. The cooled mixture was washed with ion-exchanged water, filtered and dried to give a transparent resin in powder form.

0.2 part by weight of lubricant, 0.1 part by weight of antioxidant, and 0.01 part by weight of light stabilizer were added and kneaded to 100 parts by weight of the obtained transparent resin in powder form to prepare pellets using a twin screw extruder, and the pellets were again injected. Specimen was prepared.

Example  2

In preparing the shell (c) in Example 1, 886 g of ion-exchanged water, 290 g of sodium dodecyl sulfate (3 wt% solution), 1800.0 g of methyl methacrylate, 150 g of methyl acrylate, n-octyl mercaptan 6.0 g and allyl methacrylate were stirred to prepare the emulsion in the same manner as in Example 1, except that the emulsion was prepared.

Example  3

In the preparation of the acrylic rubber core (b) in Example 1, 406.4 g of ion-exchanged water, 130 g of sodium dodecyl sulfate (3 wt% solution), 361.2 g of butyl acrylate, 361.2 g of 2-ethylhexyl acrylate, styrene 171 g, allyl methacrylate, 4.5 g, and 2.4 g of divinylbenzene were stirred to prepare an emulsion.

(c) In preparing the shell, 886 g of ion-exchanged water, 290 g of sodium dodecyl sulfate (3 wt% solution), 1800.0 g of methyl methacrylate, 150.0 g of methyl acrylate, 6.0 g of n-octyl mercaptan, allyl meta It was carried out in the same manner as in Example 1 except that 4.5g of acrylate was prepared by stirring.

Comparative example  One

The transparent resin composition which consists only of an acrylic rubber core and a polymethylmethacrylate shell layer was prepared.

(a) Preparation of Acrylic Rubber Core

First, 0.19 g of ferros sulfate (FES), 25.75 g of sodium formaldehyde sulfoxylate (SFS), and 3.50 g of disodium ethylenediaminetetraacetate (EDTA) were dissolved in 706.8 g of ion-exchanged water to prepare an activation solution.

1294.05 g of ion-exchanged water was introduced into the reactor and the temperature was raised to 70 ° C with nitrogen washing. When the temperature of the ion-exchanged water reached 70 ° C., 125 g of sodium dodecyl sulfate (SLS, 3 wt% solution), 599.6 g of butyl acrylate, 139.2 g of styrene, 7.5 g of allyl methacrylate, and 3.8 g of divinylbenzene Was added at a time. When the temperature in the reactor was stabilized at 70 ° C., 85.7 g of the activating solution and 3.8 g of cumin hydroperoxide (CHP, 80 wt% solution) were added to initiate polymerization. 37.5 g of the activating solution and 1.9 g of cumin hydroperoxide (CHP, 80 wt% solution) were further added to undergo a maturing step for 1 hour after the reaction was terminated, and nitrogen washing was continued until the reaction was terminated. Was carried out.

(b) polymethyl methacrylate shell preparation

First, 962.0 g of ion-exchanged water, 400 g of sodium dodecyl sulfate (3% by weight solution), 2025 g of methyl methacrylate, 45 g of styrene, 180 g of ethyl acrylate, and 15 g of dodecyl mercaptan (tDDM) were stirred. The monomer was emulsified. The emulsified monomer was added dropwise to the reactor in which the core polymerization was completed for 2 hours at a temperature of 70 ° C. and a nitrogen atmosphere, and 112.5 g of an activation solution and 2.25 g of cumin hydroperoxide (CHP, 80 wt% solution) were added thereto. Proceeded.

Ion-exchanged water was added to the final transparent resin latex prepared as described above to lower the final solid content to 15% by weight or less, and the temperature was raised to 80 ° C while slowly stirring with a stirrer. 22 wt% aqueous calcium chloride solution was added thereto to prepare a mixture in the form of a slurry. The mixture was cooled to 90 ° C. or more, and then cooled. The mixture was washed with ion-exchanged water, filtered and dried to obtain a transparent resin in powder form.

0.2 part by weight of lubricant, 0.1 part by weight of antioxidant, and 0.01 part by weight of light stabilizer were added and kneaded to 100 parts by weight of the obtained transparent resin in powder form to prepare pellets using a twin screw extruder, and the pellets were again injected. Specimen was prepared.

Comparative example  2

40 parts by weight of an impact modifier (Mistubishi Rayon, IR-442) composed of an acrylic rubber core and a polymethyl methacrylate shell in 60 parts by weight of a polymethyl methacrylate resin (LG MMA, HP-10), 0.2 part by weight of a lubricant, 0.1 parts by weight of antioxidant and 0.01 parts by weight of light stabilizer were added and kneaded to prepare pellets using a twin screw extruder, and the pellets were injected again to prepare specimens.

Comparative example  3

40 parts by weight of impact modifier (Mistubishi Rayon, MUX-60) consisting of butadiene-based rubber / acrylic rubber core and polymethyl methacrylate shell, 60 parts by weight of polymethyl methacrylate resin (LG MMA, HP-10), 0.2 parts by weight of lubricant Part, 0.1 part by weight of antioxidant, and 0.01 part by weight of light stabilizer were added and kneaded to prepare pellets using a twin screw extruder, and the pellets were injected again to prepare specimens.

Comparative example  4

A transparent acrylonitrile-butadiene-styrene resin (LG Chemical, TR-558A) pellet was injected to prepare a specimen.

Comparative example  5

In preparing the shell (c) in Example 1, 886 g of ion-exchanged water, 290 g of sodium dodecyl sulfate (3 wt% solution), 1950 g of methyl methacrylate, and 19.5 g of dodecyl mercaptan (Tddm) were added thereto. The same procedure as in Example 1 was carried out except that the emulsion was prepared by stirring.

[Test Example]

Physical properties of the transparent resins prepared in Examples 1 to 3 and Comparative Examples 1 to 5 were measured by the following methods, and the results are shown in Table 1 below.

* Refractive Index-After the transparent resin was prepared into a thin film having a thickness of 0.2 mm, it was measured using an Abbe refractometer at 25 ° C in accordance with ASTM D1298.

* Impact Strength-Izod impact strength was measured according to ASTM D256 using a 1/8 "specimen.

* Transparency, haze-It was measured according to ASTM D1003 using an injection molded square molded article having a thickness of 3 mm.

* Weather Resistance-Color Quest II after leaving the transparent resin for 200 hours in a weather-o-meter (ATLAS Ci35A) at 83 ° C and water spray cycle 18 minutes / 120 minutes. Δb value (difference in yellowness) was measured using (color quest II, Hunter Lab).

Hardness—measured using a Rockwell hardness tester (Rockwell 2000, Instron).

* Flowability-measured by ASTM D1238.

TABLE 1

division Transparency (%) Haze (%) Impact Strength (㎏ · cm / ㎝) MI (g / 10min) Hardness Weather resistance Example One 92.8 1.6 7.5 20.0 108.2 1.4 2 92.7 1.6 9.0 18.4 110.6 1.7 3 93.0 1.5 10.5 20.1 106.5 1.5 Comparative Example One 86.4 5.2 7.1 9.3 98.5 2.2 2 93.5 1.6 3.6 18.2 108.9 1.6 3 89.7 6.5 8.5 16.7 101.7 5.6 4 90.3 2.0 10.2 20.1 112.5 5.3 5 93.1 1.5 8.1 10.2 107.5 2.1

Through Table 1, according to the present invention it was confirmed that the transparent resin according to Examples 1 to 3 made of a seed, an acrylic rubber core and a shell is excellent in weatherability and impact strength, and at the same time excellent in transparency.

On the other hand, Comparative Example 1, which consists only of an acrylic rubber core and a polymethyl methacrylate shell layer, was generally poor in physical properties, and compared with an impact modifier consisting of an acrylic rubber core and a polymethyl methacrylate shell in a polymethyl methacrylate resin. Example 2, while maintaining the transparency, but the impact strength was greatly reduced, Comparative Example 3 using the impact modifier consisting of butadiene-based rubber / acrylic rubber core and polymethyl methacrylate shell in the polymethyl methacrylate resin is not good weather resistance and transparency It was greatly degraded. In addition, Comparative Example 4 using the transparent ABS resin was confirmed that the weather resistance is not good.

Although described in detail above with reference to the specific embodiments of the present invention, it will be apparent to those skilled in the art that various changes and modifications can be made within the scope and spirit of the present invention, and such modifications and modifications belong to the appended claims. It is also natural.

Claims (15)

(a) 1 to 10% by weight of seeds formed by polymerization of methyl methacrylate; (b) 10 to 50% by weight of an acrylic rubber core surrounding the seed and formed by polymerization of an alkyl acrylate and an aromatic vinyl compound; And (c) 40 to 80% by weight of a shell surrounding the core and formed by polymerization of at least one compound selected from the group consisting of methyl methacrylate and an alkyl acrylate and an aromatic vinyl compound; The refractive index of the (a) seed, (b) core and (c) shell is 1.48 to 1.50, respectively, characterized in that the transparent resin composition. The method of claim 1, (C) the shell is 1,3-butanediol diacrylate, 1,3-butanediol dimethacrylate, 1,4-butanediol diacrylate, 1,4-butanediol dimethacrylate, allyl acrylate, allyl meta Characterized in that the crosslinking agent selected from the group consisting of acrylate, trimethylolpropane triacrylate, tetraethylene glycol diacrylate, tetraethylene glycol dimethacrylate, and divinylbenzene is further added and polymerized. Transparent resin composition. The method of claim 1, The (b) acrylic rubber core is formed by polymerizing 8 to 40 wt% of alkyl acrylate and 2 to 10 wt% of an aromatic vinyl compound based on 100 wt% of the total monomer constituting the transparent resin composition. . The method of claim 1, (C) the shell is 39 to 70% by weight of methyl methacrylate, and 1 to 10% by weight of a compound selected from the group consisting of alkyl acrylates and aromatic vinyl compounds with respect to 100% by weight of the total monomers constituting the transparent resin composition % Is polymerized and formed, The transparent resin composition characterized by the above-mentioned. The method of claim 1, (A) the seed is a transparent resin composition, characterized in that the average particle diameter of 50 to 200 nm. The method of claim 1, The acrylic rubber core (b) is a transparent resin composition, characterized in that the average particle diameter of 100 to 400 nm. The method of claim 1, The (c) shell is a transparent resin composition, characterized in that the average particle diameter is 200 to 1000 nm. The method of claim 1, The alkyl acrylates of (b) and (c) consist of methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl acrylate, hexyl acrylate, octyl acrylate and 2-ethylhexyl acrylate The transparent resin composition, characterized in that at least one selected from the group. The method of claim 1, The aromatic vinyl compound of (b) and (c) is at least one selected from the group consisting of styrene, α-methylstyrene, p-methylstyrene and vinyltoluene. (A) polymerizing methyl methacrylate to produce a seed; (B) polymerizing a mixture of alkyl acrylate and aromatic vinyl compound in the presence of the prepared seed to produce an acrylic rubber core; And (C) preparing a shell by polymerizing a mixture comprising methyl methacrylate and at least one compound selected from the group consisting of alkyl acrylates and aromatic vinyl compounds in the presence of the prepared core. Manufacturing method. The method of claim 10, In the step of preparing the shell of (C), 1,3-butanediol diacrylate, 1,3-butanediol dimethacrylate, 1,4-butanediol diacrylate, 1,4-butanediol dimethacrylate, Further mixing at least one crosslinking agent selected from the group consisting of allyl acrylate, allyl methacrylate, trimethylolpropane triacrylate, tetraethylene glycol diacrylate, tetraethylene glycol dimethacrylate, and divinylbenzene The manufacturing method of the transparent resin composition characterized by the above-mentioned. The method of claim 10, The alkyl acrylate is one or more selected from the group consisting of methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl acrylate, hexyl acrylate, octyl acrylate and 2-ethylhexyl acrylate. The manufacturing method of the transparent resin composition characterized by the above-mentioned. The method of claim 10, The aromatic vinyl compound is at least one selected from the group consisting of styrene, α-methylstyrene, p-methylstyrene and vinyltoluene. The method of claim 10, In the step of preparing the shell of (C), in the presence of at least one molecular weight modifier selected from the group consisting of tertiary-dodecyl mercaptane and n-octyl mercaptane (n-octyl mercaptane) A method for producing a transparent resin composition, characterized in that the polymerization. The method of claim 10, (A) seed, (B) core and (C) shell are each prepared by emulsion polymerization.